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Volume 33 Issue 08
Aug.  2007
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Journal of Beijing University of Aeronautics and Astronautics  > 2007  >  33(08): 890-893.
Gao Fei, Sun Jinping, Yuan Yunneng, et al. New method of moving target detection using single-channel SAR ATI[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(08): 890-893. (in Chinese)
Citation: Gao Fei, Sun Jinping, Yuan Yunneng, et al. New method of moving target detection using single-channel SAR ATI[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(08): 890-893. (in Chinese)
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New method of moving target detection using single-channel SAR ATI

  • School of Electronics and Information Engineering, Beijing University of Aeronautics and Astronautics, Beijing 100083, China

  • Received Date: 20 Oct 2006
  • Publish Date: 31 Aug 2007
    Abstract
  • A detector for slow GMTI (ground moving target indication) with a single channel SAR (synthetic aperture radar) multi-look ATI (along track interferometry) was investigated. The steps include constructing multi-look using overlapped or unoverlapped windows, respective imaging, phase compensation and performing interferemetric processing. Concerning the crucial step of phase error rectification, a compensation method of phase calibration using SSP (signal subspace processing) was proposed. By this robust and adaptive approach,decorrelation between sub-images can be resolved and phase randomicity of multi-look ATI can be alleviated to some extent, moving targets can be isolated much easily from interferometric phase of multi-look sub-images. Simulation results show effectiveness of the method in moving targets detection in strong clutter, thus it provides reliable reference for single channel SAR GMTI and supports operational extension of existing SAR system.

     

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    • References(1)
  • [1] Sharma J J, Gierull C H, Collins M J. The influence of target acceleration on velocity estimation in dual channel SAR-GMTI[J]. IEEE Transactions on Geoscience and Remote Sensing, 2006,44(1):134-147 [2] Gierull C H. Azimuth positioning of moving targets in two-channel SAR by direction-of-arrival estimation[J]. Electronic Letters, 2004, 40(21):1380-1381 [3] Stockburger E F, Held D N. Interferometric moving ground target imaging IEEE Nat Radar Conf Proc. Piscataway,NJ:IEEE, 1995:438-443 [4] Lipps R, Chen V, Bottoms M. Advanced SAR GMTI techniques IEEE Nat Radar Conf Proc. Piscataway,NJ:IEEE,2004:105-110 [5] 康雪艳,杨汝良.对机载单天线SAR实际数据进行ATI动目标检测的新方法[J]. 电子学报,2005,33(3):416-418 Kang Xueyan, Yang Ruliang. A new method of moving target detection using ATI for single-antenna airborne SAR real data[J].Acta Electronica Sinica,2005,33(3):416-418(in Chinese) [6] Gao Fei, Mao Shiyi, Yuan Yunneng, et al. Approaches of single channel SAR combining ATI for GMTI International Conference on Signal Processing. Piscataway,NJ:IEEE,2006:2820-2823
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